/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2010, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.messaging;

import java.util.HashMap;
import java.util.Map;

/**
 * An enumeration of the supported Messaging subsystem namespaces.
 *
 * @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
 * @author scott.stark@jboss.org
 */
public enum Namespace {
   // must be first
   UNKNOWN(null),

   MESSAGING_1_0("urn:jboss:domain:messaging:1.0"),
   MESSAGING_1_1("urn:jboss:domain:messaging:1.1"),
   MESSAGING_1_2("urn:jboss:domain:messaging:1.2"),
   MESSAGING_1_3("urn:jboss:domain:messaging:1.3"),
   MESSAGING_1_4("urn:jboss:domain:messaging:1.4"),
   MESSAGING_1_5("urn:jboss:domain:messaging:1.5"),
   MESSAGING_2_0("urn:jboss:domain:messaging:2.0"),
   MESSAGING_3_0("urn:jboss:domain:messaging:3.0");

   /**
    * The current namespace version.
    */
   public static final Namespace CURRENT = MESSAGING_3_0;

   private final String name;

   Namespace(final String name) {
      this.name = name;
   }

   /**
    * Get the URI of this namespace.
    *
    * @return the URI
    */
   public String getUriString() {
      return name;
   }

   private static final Map<String, Namespace> MAP;

   static {
      final Map<String, Namespace> map = new HashMap<String, Namespace>();
      for (Namespace namespace : values()) {
         final String name = namespace.getUriString();
         if (name != null) map.put(name, namespace);
      }
      MAP = map;
   }

   public static Namespace forUri(String uri) {
      final Namespace element = MAP.get(uri);
      return element == null ? UNKNOWN : element;
   }
}
